Gas burner



F. A. NEMEC Nov. 16, 1937.

GAS BURNER Filed NOV. 11, 1935 INVENTOR. 'FANEMEC;

ATTORN f UNITED STATES;

Patented Nov. 16, 1 937 PATENT OFFICE j "GASYBURQNER Fred A. Nemec, whittienf flalif. I *n plieau n November 11, 1935,3855; N .4a19s 6 Claims. (01.1584) invention'relates to improvements in a burner-construction for furnaces. 1 t The general object of this inventionis to provide a novel firing tube assembly for gas burners.

Another object of the invention is to providea novel firing tube for a gas burner. An additional object of my invention is to provide novel means for supporting a plurality of burner tubes in an operative position.

, Other objects and the advantages of this invention will be apparent from the following .de-,

scriptiontaken in connectionwith the accom-j panying drawing wherein? Fig. 1 is a fragmentary section through'a gas furnace, showing my improved'burner assembly thereinf f V Fig. 2 is a fragmentary face' view of the ap--' "paratus shown in Fig. 1;

Fig. 3 is a fragmentary enlarged section through the tube section, and Fig. 4 is a rear view of the Fig. 3. H V t Referring to the drawing by reference characters I have indicated a gas furnace generally at [0. The furnace J is of the type fired from the front and has a firing aperture l2 therein' At the upper and lower surfaces of the aperture IZ' metal plates l3 are provided. f v In the accompanying drawing I have indicated my burners generally at M. As shown each of the burners l4 includes a metal tube section, or tile burner tube holder l5 which is adapted'to' support a plurality of tile burner tubes l6; Each tube section l5 includes'endplate portions "and;

parts shown in as shown, has two rows of four tile apertureslfl thereim intermediate the. end plates; Between the tile apertures IS the tube sections have apertures 19 therein and the metal surrounding thetile-apertures i8 is preferably curved so that when two sets of tube sections l5 are placed side by side, apertures 20, similar to the apertures l9 are formed between the two tube sections. (See Fig. 2).

Adjacent the top and bottom of the tube section intermediate the tile apertures the tube section includes a lug 22 which has a threaded aperture 23 therein and adjacent each end the top and bottom plate portions have an aperture 24 therein.

As shown each of the tile burner tubes I6 comprises a substantially cylindrical body portion 25 having an aperture 26 therethrough which includes a counter bored portion 262 The body 25 further includes an enlarged shoulder 21 which terminates in an enlarged flange portion '28. The;tile tubes l6 are supported by the tube sections I5 with the tube shoulders 21 positioned in the tube section apertures I8 and with the tube flanges 28 engaging the face of the tube 5 section. 3

.The tube section apertures l8 and the tube shoulders' 2l are formed slightly elliptical as shown Fig. 4 and after a tube l6 has been positioned in a tube section aperture I8 it is rotated until it, firmly engages the side walls of the tube section aperture as shown at A in Fig. l. Fromthe'foregoing it will be seen that the tube sections completely surround a portion of each of the tile tubes l6 and even should a tube become cracked itwill not fall out of the tube section. Furthermore, the flanges 28 of the tile tubes pre-' vent the tubes from accidentally sliding through the tube sections.

When installing a tube section I5 in a furnace 2O such'asindicated'at ill the tube section is positioned'between thev plates l3 and secured thereto byfbolts "29'fpositioned in the apertures l1 and then 'anothe'rtube section I5 is positioned besidel thefirst and similarly secured to the plates I 3 and so on until the required number of tube sections are in position; Thereafter the tile firm tubes" l6" are positioned in the tube section apertures I S'a's previously described. Each of the burner units l4 further includes 30 a fuel distributing manifold 30 which includes a vertical conduit portion 3| having horizontal conduit portions 32 thereon, onefor each tier of firing tiles. lilach of the horizontal conduits includes adjacent each end a fuel jet 33 which is substantially concentric with its associated fir ingftubej' lfig The manifold 30 further includes upper and lower leg portions 34 having right angularly extending arms 34 thereon which engage the tube section |5.- The manifold legs 34 are secured to the tube section by bolts 35 which are positioned in the threaded apertures 23 of the tube section.

Adjacent each of the horizontal conduit portions on the vertical conduit portion and between the jets 33 the manifold 30 includes a lug 35 which extends therefrom in the same direction as the arms 34'.

The lugs 35 prevent firing tubes Hi from accidentally working out of the tube sections I4.

Fuel is conveyed to each of the manifolds 30 by a conduit 36 which at one end communicates with the interior of the vertical conduit 3| and at the opposite end communicates with the interior preferably has a shut off valve 38 interposed therein.

By providing the counter bored portion 26 in the tile firing tubes 58 a Venturi effect is produced in each of the tubes when the burner is operating.

By providing the apertures 19 in each of the tube sections it and the apertures 20 between the tube sections passageways for draft air past the tube sections are provided for.

Although I have shown the tube section l5 as adapted to support eight tile firing tubes in two rows of four tiers it will be understood that the number of tile tubes and the particular position? ing thereof may be varied to fit various cond tions. 1 1

assembly without the tile burner tubes l6 and when such a burner is desired the "tube sections M andithe manifolds 39 are assembled as previously described with the tile burner tubes omitted. r i

From the foregoing it will be apparent. that I have provided a novel burner. unit for gas furnaces which is simple in construction and highly eflicient in use.

Having thus described my invention I claim:

1. A burner including a burner tube holder, said holderhaving a plurality of apertures there in, said apertures being slightlyelliptical in shape and a plurality "of tile burner tubes, each of said tubes comprising a substantially cylindri-' cal body portion having an aperture there-f through, said body'having an enlarged shoulder thereon terminating in an enlarged flange portion,'said tube shoulder being slightly elliptical in shape, said tubesbeing mounted on saidholder ivitlrsaid' shoulders thereof positioned in said holder apertures and rotated to tightly engage the surfaces of said holder apertures.

'2. In combination with'a gas'furnace having a firing aperture therein, a burner including fa burner tube holder, a plurality of burner tubes and a fuel manifold, said holder having a plurality of tile apertures therein, each of said'tubes comprising a substantially cylindrical'bo'dy portion having 'a central aperture, saidnbody' tor;- minatingin an enlarged flange, said tubes being mounted on said holder with said shoulders thereof positioned in said holder apertures, said fuel manifold'having lugs thereon adapted to engage a burner tube to prevent accidental displacement there'ofQ a 3. For use with a burner tube holder having a plurality of slightlyelliptical apertures therein, atile burner. tube comprising acylindrical body portion having an aperture thereth roughisaid body including a shoulder terminating in an outwardly directed flange portion, said shoulder being slightly elliptical in shape and being adapted of said holder apertures. V V 5. 'A'burner, saidburner including a burner to fit into a correspondingly shaped burner tube holder.

4. In combination with a gas furnace having a firing aperture therein, a burner, said burner including a' burner tube holder,,a plurality of tubes and a fuel manifold, said holder having a plurality of tube apertures therein, said apertures being slightly elliptical, each of said burner tubes comprising a substantially cylindrical body portion'having a'central aperture which is of increased diameter at one end, said body including an enlarged shoulder terminating in an enlarged iiange, said shoulder being slightly elliptical, said -tubes being mounted on said holder with said shoulders thereof positioned in said holder aper- At times it may be desirable to form -a burner-5' tures and rotated to tightly engage the surfaces tubegtile holder, said holder having a plurality of apertures therein, a plurality of tile burner tubes, each of said tubes including a cylindrical body portionhaving an enlarged shoulder portion thereon terminating in an enlarged flange portion, all of said pcrtions'being coaxial with each other, said body portion having an aperture therethrough, said aperture'including' two cylindrical portions of difierent diameters, the cylindrical portion of greater diameter being within the said cylindrical body portion which is of relatively small diameter, saidrtile burner tube being mounted onfsaid holder with said shoulder thereof positioned "in said holder apertures, said tube holder and said tubes having co-action apertures engaged to hold the tubes in place.

6. A burner, said burner including a plurality of tile burner tube holders, each of said tile burner tube holders including a body having upward- "ly directed end plates thereon, said bodies each having a plurality of rows of aligned apertures therein, said bodieshaving secondary apertures therein and disposed adjacent said first mentioned apertures, said secondary apertures being defined by wall portions substantially coaxial with said first mentioned apertures,.said bodies at the edges being 'curvedso that two of the bodies when adjacent formsecondary apertures similar to those formed within the body, said tube hol'drs adjacent the top and bottomthereof including lugs having apertures therein, a manifold, said manifold having legs thereon, means to securesaid legs to said lugs, said manifold'fincludin'g a body disposed between said apertures, saidv manifold body having horizontal conduit,portions eachdisposed opposite one of said apertures, a burner tilein each of 'said apertures and'a 'noz'zle said conduits disposed in alignment with said burner tilesi :FRED anemic, 

